package com.atzhiguo.springcloud.service;

import cn.hutool.core.util.IdUtil;
import com.netflix.hystrix.contrib.javanica.annotation.HystrixCommand;
import com.netflix.hystrix.contrib.javanica.annotation.HystrixProperty;
import org.springframework.stereotype.Service;
import org.springframework.web.bind.annotation.PathVariable;

import java.util.concurrent.TimeUnit;

/**
 * @author zhiguo
 * @version v1.0
 * @create 2020/10/16 14:54
 */
@Service
public class PaymentService {

    //*********服务降级
    /**
     * 正常访问
     * @param id
     * @return
     */
    public String paymentInfo_ok(Integer id){
        return "线程池： " + Thread.currentThread().getName() + "  paymentInfo_ok,id:  " + id + "\t" + "成功！";
    }

    // 服务降级    commandProperties 超时设置
    @HystrixCommand(fallbackMethod = "paymentInfo_TimeoutHandler",commandProperties = {
            @HystrixProperty(name = "execution.isolation.thread.timeoutInMilliseconds",value = "5000") //设置三秒正常，超过找兜底的处理
    })
    public String paymentInfo_Timeout(Integer id){
        int timeNumber = 3;
        //int timeNumber = 10/0;
        try {
            TimeUnit.SECONDS.sleep(timeNumber);
        }catch (Exception e){
            e.printStackTrace();
        }
        return "线程池： " + Thread.currentThread().getName() + "  id:  " + id + "\t" + "耗时: "+timeNumber+"秒！";
    }
    public String paymentInfo_TimeoutHandler(Integer id){
        return "线程池： " + Thread.currentThread().getName() + "  8001系统繁忙或者运行报错，请稍后再试！,id:  " + id + "\t" + "o(╥﹏╥)o";
    }

    //*********服务熔断
    @HystrixCommand(fallbackMethod = "paymentCircuitBreaker_fallback",commandProperties = {
            @HystrixProperty(name = "circuitBreaker.enabled",value = "true"), // 是否开启断路器
            @HystrixProperty(name = "circuitBreaker.requestVolumeThreshold",value = "10"), //请求次数
            @HystrixProperty(name = "circuitBreaker.sleepWindowInMilliseconds",value = "10000"), //时间窗口期
            @HystrixProperty(name = "circuitBreaker.errorThresholdPercentage",value = "60"), //失败率达到多少后跳闸
    })
    public String paymentCircuitBreaker(Integer id){
        if (id < 0){
            throw new RuntimeException("*******id 不能负数");
        }
        String serialNumber = IdUtil.simpleUUID();
        return Thread.currentThread().getName() + "\t" + "调用成功，流水号： " + serialNumber;
    }
    public String paymentCircuitBreaker_fallback(Integer id){
        return "id 不能负数，请稍后再试，o(╥﹏╥)o" + id;
    }

}
